中文摘要：

利用科尔沁沙地通辽市扎鲁特旗鲁北镇附近榆树树木年轮资料,建立了长度为97 a的榆树标准年表,通过标准年表和鲁北地区水文气象资料相关,分析了榆树生长与水文气象因子的关系.结果表明：年轮指数与7月份降水量、年降水量、8月和9月蒸发量之和的相关系数最大,由此,通过标准年表重建了该地区1906-1951年46 a的7月份降水量、年降水量、8月和9月蒸发量之和序列,经验证,重建序列具有较好的可靠性.对比发现,树木年轮指数均值随年降水量均值的增大而增大,沙尘暴发生日数总数随降水量均值的增大而减少,间接说明沙尘暴的发生对榆树的生长可能造成负面影响.

英文摘要：

Using the annual ring datum of elm nearby Lubei Town of Jarutqi, Tongliao City, established the length for 97 years elm standard timeline, according to the standard timeline and the hydrometeorology datum of Lubei area, analyzed the relationship between the elm growth and the hydrometeorology factor. The analysis indicated that the relationship between the annual ring index and rainfall amount of July, the whole year rainfall amount, the transpiration amount summation of August and September has the biggest correlation coefficient, from this, reconstructed the sequence of July rainfall amount, the whole year rainfall amount, August and September transpiration amount summation of 1906--1951, 46years in this local area through the standard timeline, after the confirmation, the reconstruction sequence has a good reliability. From the comparative analysis, it indicated that accompany with the average value of annual rainfall increase, the average value of annual ring index increase, the total days break out of the sand storm increase, on the contrary, the total days break out of the sand storm fall off, it indirect explained that the break out of sand storm may bring about negative affect to the growth of elm tree.